CN105355341B - Solid core rod, insulator and manufacturing method - Google Patents
Solid core rod, insulator and manufacturing method Download PDFInfo
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- CN105355341B CN105355341B CN201510883861.3A CN201510883861A CN105355341B CN 105355341 B CN105355341 B CN 105355341B CN 201510883861 A CN201510883861 A CN 201510883861A CN 105355341 B CN105355341 B CN 105355341B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
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Abstract
The invention discloses a solid core rod. The solid core rod comprises an inner core and at least one winding layer, wherein the at least one winding layer is wound outside the inner core; the winding layer comprises a first winding group and a second winding group which are alternatively arranged, the winding angle of the first winding group is 3 to 10 DEG C, the winding angle of the second winding group is 80 to 89 DEG C, and the thickness portion of the first winding group to the second winding group is 7-9:1-3. The invention further provides a manufacturing method of the solid core rod and an insulator comprising the solid core rod. The solid core rod and the preparation method thereof can reduce the solidification cost, saves energy consumption, effectively improve the production efficiency of the core rod, and at the same time, improves the bending performance of the core rod.
Description
Technical field
The present invention relates to a kind of solid mandrel, especially a kind of composite post insulator solid core
Rod, and its manufacture method and have employed the insulator of this solid mandrel.
Background technology
Along with extra high voltage line increases year by year in China, the consumption of power transmission and transformation support insulator is also
Increase therewith.At present, the support insulator of power transmission and transformation includes three kinds: full porcelain type, porcelain core add
Silicon rubber umbrella skirt type, composite inner core additional silicon rubber umbrella skirt type.Full porcelain t shore insulator
, easily there is fracture, brittle failure in Heavy Weight, and after electric pressure height, length strengthens.Porcelain core adds silicon rubber
It is bonding with ceramic core rod not then to there is external shed silastic material in the support insulator of glue full skirt type
Jail, produces the phenomenon of bubble, have impact on electric property and the life-span of product.Along with power transmission and transformation electricity
The raising of pressure grade, (the letter below of composite plug additional silicon rubber umbrella skirt t shore insulator
Claim " composite post insulator ") consumption accounting increase therewith.
The plug of composite post insulator uses composite to make, and owing to being relatively large in diameter, uses
Pultrude process is difficult to a pultrusion.The more a kind of molding mode of plug employing at present is,
The little drawing and extruding bar of all size is bundled, carries out overall perfusion, but this kind of technique by
In many thinner mandrel structures, its adhesive linkage is too much, occupies in the cross-sectional area of plug
Bigger area ratio；The internal generation internal stress of inequality relatively greatly in solidification process, stress is not
All cause inside to crack, thus be extremely difficult in actual use preferably use effect
Really.
Chinese patent application CN200810235759.2 discloses a kind of ultra-high-voltage post compound inslation
Son plug, described plug is made up of rod core and winding pipe, and winding pipe is made up of three layings,
Each laying is formed by internal layer and outer layer, and the winding angle of internal layer is at 25 °～35 °, outer layer
Winding angle at 55 °～65 °.Inventor finds, such plug is only capable of meeting conventional propping up
The requirement of post insulator, but for the post insulator period of the day from 11 p.m. to 1 a.m that the mechanical requirements such as bending property are high is deposited
In problem.
Summary of the invention
An object of the present invention is to provide a kind of solid mandrel, and this solid mandrel disclosure satisfy that
Bending property requires that high insulator, particularly support insulator use requirement.
The two of the purpose of the present invention are to provide the manufacture method of described solid mandrel, the method energy
Access.
The three of the purpose of the present invention are to provide a kind of insulator including above-mentioned solid mandrel, institute
State insulator bending property higher.
The solid mandrel of the present invention includes inner core and at least one winding layer, described at least one
Winding layer is wrapped in the outside of described inner core；Described winding layer includes that the first winding group and second twines
Winding, the winding angle of the first winding group is 3 °～10 °, and the winding angle of the second winding group is
80 °～89 °, and the thickness proportion of the first winding group and the second winding group is 7～9:1～3；Institute
The first winding group and the second described winding group stated are alternately arranged.
According to solid mandrel of the present invention, it is preferable that described winding layer is only wound around by first
Group and the second winding group are constituted.
Inventor finds, owing to using the winding layer structure of the present invention, is the most specifically wound around
The angle of group and thickness proportion so that the bending property of plug is improved significantly.
Solid mandrel according to the present invention, it is preferable that the winding angle of described first winding group is
3 °～8 °, more preferably 5 °～8 °；The winding angle of described second winding group is 82 °～87 °,
More preferably 83 °～85 °.Preferably, the thickness ratio of described first winding group and the second winding group
Example is 7.5～8.5:1.5～2.5；According to one of the present invention preferred embodiment, described first
Winding group is 8:2 with the thickness proportion of the second winding group.
Solid mandrel according to the present invention, it is preferable that the thickness of described first winding group be 4～
16mm, the thickness of described second winding group is 1～4mm.It is highly preferred that described first twines
The thickness of winding is 4.5～15mm, and the thickness of described second winding group is 1～3.5mm.Again
Preferably, the thickness of described first winding group is 5～12mm, the thickness of described second winding group
Degree is 1.25～3mm.Inventor finds, uses canoe and the thickness proportion of the present invention
Time, the bending strength of plug significantly improves.
According to the solid mandrel of the present invention, each winding layer comprise multiple described first winding group and
Second winding group, and the first winding group and the second winding group alternately arranged, the quantity root of winding group
The thickness being actually needed of core rod determines factually.Preferably, each winding layer comprises 5～12
Individual first winding group and 5～12 the second winding groups.According to the solid mandrel of the present invention, preferably
Ground, the thickness of each winding layer is 35～60mm, preferably 40～55mm, more preferably
50～55mm.
According to solid mandrel of the present invention, it is preferable that at least one winding layer described is two
Individual above winding layer or more than three winding layers.According to the solid mandrel of the present invention, described solid
Plug only includes two winding layers.The first winding group and second that said two winding layer comprises twines
The quantity of winding can be identical or different, namely the thickness of each winding layer is different.
According to the solid mandrel of the present invention, the diameter of described inner core can be 80～110mm.
The structure of the present invention is especially suitable for the solid mandrel of major diameter, therefore, it is highly preferred that in described
A diameter of the 100～110mm of core (such as drawing and extruding bar).
The solid mandrel of the present invention can include that multiple winding layer, multiple winding layer nestings are wrapped in
Together.Such as, include that two winding layer the first winding layers and second are wound around when solid mandrel
Layer, the first described winding layer is wrapped in the outside of described inner core, and described second winding layer is wound around
Outside at described first winding layer；When described solid mandrel includes more than two winding layer,
Position relationship between each winding layer is similar.
According to one particularly preferred embodiment of the present invention, described solid mandrel include inner core and
Two winding layers, a diameter of the 80 of described inner core～110mm, preferably 100～110mm；
The thickness of each winding layer is 35～60mm, preferably 40～55mm, more preferably 50～
55mm。
Solid mandrel according to the present invention, it is preferable that described inner core uses pure drawing and extruding bar or perfusion
Drawing and extruding bar, preferably irrigates drawing and extruding bar.The outer surface of described inner core preferably has screw thread, with
It is beneficial to be wound around silk contact with the winding first of inner core.According to one embodiment of the present invention, institute
Stating the depth of thread is 0.2mm～0.7mm, preferably 0.3mm～0.6mm, more preferably
0.5mm；Thread pitch is 1mm～6mm, preferably 2mm～4mm, more preferably
3mm。
Solid mandrel according to the present invention, it is preferable that the winding material of described winding layer uses ring
Epoxy resins, for example with the non-twist fiber of alkali-free+acid anhydride based epoxy resin system, alkali-free without boron without
Twist with the fingers fiber+amine-type cure epoxy-resin systems, the non-twist fiber of alkali-free+amine-type cure epoxy resin
System, alkali-free are without the non-twist fiber of boron+anhydrides based epoxy resin system.Preferably, twine described in
The winding material of winding layer uses the non-twist fiber of alkali-free+acid anhydride based epoxy resin system, or alkali-free
Without the non-twist fiber of boron+anhydrides based epoxy resin system, more preferably alkali-free without the non-twist fiber of boron
+ anhydrides based epoxy resin system.
Solid mandrel according to the present invention, it is preferable that be coated with between described inner core and described winding layer
There is resin, between adjacent winding layer, scribble resin, be beneficial to increase between inner core and winding layer
Binding ability.Described resin can use anhydride-cured based epoxy resin system, amine-type cure
Epoxy-resin systems etc., it is preferred to use acid anhydride based epoxy resin system.
The present invention also provides for the manufacture method of above-mentioned solid mandrel, comprises the steps:
(1) cleaning: be cleaned processing to the outer surface of described inner core；
(2) winding layer is formed: by the outer surface of resin coating inner core after the cleaning, then
Alternately it is wound around the first winding group and the second winding group, then carries out cured, form winding layer.
When the solid mandrel of the present invention includes N (>=2) layer winding layer, including walking as follows
Rapid:
(1) cleaning: be cleaned processing to the outer surface of described inner core；
(2) it is wound around for the first time: by the outer surface of resin coating inner core after the cleaning, then
Alternately it is wound around the first winding group and the second winding group, described first winding group and the second winding group
Winding angle is respectively 3 °～10 ° and 80 °～89 °, described first winding group and the second winding group
The ratio of thickness be: 3 °～10 °: 80 °～89 °=7～9:1～3, carry out cured, obtain
First winding layer；
(3) n-th is wound around: by the outer surface brushing resin of previous winding layer, is alternately wound around
First winding group and the second winding group, described first winding group and the winding angle of the second winding group
Be respectively 3 °～10 ° and 80 °～89 °, the thickness of described first winding group and the second winding group it
Ratio is: 3 °～10 °: 80 °～89 °=7～9:1～3, carries out cured, obtains N and twines
Winding layer；
(4) processing: be processed by product requirement size.
Preferably, described method also includes the step that the outer surface of inner core machines process
Suddenly, this step is before step (1).It is highly preferred that described step is at the outer surface of inner core
Vehicle Processing goes out screw thread, and the depth of thread is 0.2mm～0.7mm, preferably 0.3mm～
0.6mm, more preferably 0.5mm；Thread pitch is 1mm～6mm, preferably 2mm～
4mm, more preferably 3mm.
Preferably, in step (1), described cleaning is to use alcohol wipe.Preferably, adopt
Alcohol wipe is dipped in 2-5 time with steamed buns stuffed with sweetened bean paste cloth, preferably 3-4 time；Interval time, 5-15 divided every time
Clock, preferably 8-12 minute.
Preferably, in step (2) and (3), the thickness of described first winding group be 4～
16mm, the thickness of described second winding group is 1～4mm.It is highly preferred that described first twines
The thickness of winding is 4.5～15mm, and the thickness of described second winding group is 1～3.5mm.Again
Preferably, the thickness of described first winding group is 5～12mm, the thickness of described second winding group
Degree is 1.25～3mm.Solid mandrel according to the present invention, it is preferable that the thickness of each winding layer
Degree is 35～60mm, preferably 40～55mm, more preferably 50～55mm.
Preferably, in step (3), before carrying out n-th winding, by outside previous winding layer
Surface carries out playing rough process.Preferably, with angle grinding machine, outer surface resin-rich layer is ground off, grind off
Thickness is 0.2mm～0.8mm, removes chip, cleaning.The same step of described clean method
(1) clean method, repeats no more.
Preferably, in step (3), described N=2～4；It is highly preferred that N=2, i.e. it is wound around
Two winding layers.
The present invention also provides for a kind of insulator, and described insulator includes above-mentioned solid mandrel.Preferably
Ground, described insulator is support insulator.Owing to using the solid mandrel of the present invention, obtain
Insulator has excellent bending property.
Compared with existing solid mandrel, in the premise of the winding layer using same thickness and quantity
Under, due to the fact that and have employed special angle design and thickness arrangement, and have more excellent
Bending property, it is possible to meet the requirement of the support insulator high to mechanical requirements such as bending properties.
Accompanying drawing explanation
Fig. 1 is the core surface structural representation after Vehicle Processing processes of embodiment 1.
Fig. 2 is the solid mandrel structural representation of embodiment 1.
Description of reference numerals is as follows:
1-screw thread；2-drawing and extruding bar inner core；3-the first winding layer；4-the second winding layer.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated, but the protection of the present invention
Scope is not limited to this.
In the present invention, between the winding angle of described winding group refers to that winding material and inner core are axially
Angle.
1-screw thread；2-drawing and extruding bar inner core；3-the first winding layer；4-the second winding layer.
Embodiment 1
The solid mandrel of the present embodiment includes that drawing and extruding bar inner core the 2, first winding layer 3 and second twines
Winding layer 4, the first winding layer 3 is wrapped in the outside of drawing and extruding bar inner core 2, and the second winding layer 4 twines
It is wound on the outside of the first winding layer 3.The outer surface of drawing and extruding bar inner core 2 has screw thread 1, screw thread
The degree of depth of 1 about 0.5mm, the pitch of screw thread 1 is about 3mm.First winding layer 3 and second twines
The material being wound around silk being coiled into 4 is that alkali-free is without boron Non-twisting glass fibre.Drawing and extruding bar inner core 2 straight
Footpath is 110mm, and the thickness of the first winding layer 3 and the second winding layer 4 is respectively 50mm.Draw
Squeeze between rod inner core 2 and the first winding layer 3, between the first winding layer 3 and the second winding layer 4
All it is brushed with anhydride-cured based epoxy resin.First winding layer 3 and the second winding layer 4 are by alternately
First winding group of arrangement and the second winding group composition, the winding angle of the first winding group is
8 °, the winding angle of the second winding group is 85 °, and the thickness of the first winding group and the second winding group
Degree ratio is 8:2.
Embodiment 2
The manufacture method of the solid mandrel of embodiment 1:
First the drawing and extruding bar inner core 2 of a diameter of 110mm is carried out surface Vehicle Processing process, car
Processing screw thread 1, the depth of thread about 0.5mm, thread pitch controls at about 3mm, then
Proceed as follows:
(1) cleaning: first brush off, with hairbrush, the chip that Surface Machining goes out, then use steamed buns stuffed with sweetened bean paste cloth
Dipping in alcohol wipe 3 times, every is 10 minutes all over interval time；
(2) it is wound around for the first time: the inner core hair rolling after cleaning is dipped in winding resin at inner core
Rod external coating resin, frame is wound on wrapping machine, is alternately wound around the first winding group and the
Two winding groups, the winding angle of the first winding group and the second winding group is respectively 8 °, 85 °, thick
Degree ratio is: 8 °: 85 °=8:2；When winding thickness reaches 50mm, stop being wound around, carry out solid
Change processes, and obtains the first winding layer 3；
(3) second time is wound around: by the outer surface brushing resin of the first winding layer, frame is in winding
On machine, alternately it is wound around the first winding group and the second winding group, the first winding group and the second winding group
Winding angle be respectively 8 °, 85 °, thickness ratio is: 8 °: 85 °=8:2；Winding thickness reaches
During 50mm, carry out cured, obtain the second winding layer 4；
(4) processing.
Comparative example 1
First the drawing and extruding bar inner core to a diameter of 110mm carries out surface Vehicle Processing process, Che Jia
Work goes out screw thread, the depth of thread about 0.5mm, and thread pitch controls, at about 3mm, then to carry out
Following operation:
(1) cleaning: first brush off, with hairbrush, the chip that Surface Machining goes out, then use steamed buns stuffed with sweetened bean paste cloth
Dipping in alcohol wipe 3 times, every is 10 minutes all over interval time；
(2) it is wound around for the first time: the inner core hair rolling after cleaning is dipped in winding resin at inner core
Rod external coating resin, frame is wound on wrapping machine, and the first winding group winding angle is
30 °, it is wound to thickness about 25mm；It is wound around the second winding group, the winding of the second winding group again
Angle is 60 °, during thickness about 25mm, stops being wound around, carries out cured, obtain first
Winding layer；
(3) second time is wound around: by the outer surface brushing resin of the first winding layer, frame is in winding
Being wound on machine, the first winding group winding angle is 30 °, is wound to thickness about 25mm；
Being wound around the second winding group again, the winding angle of the second winding group is 60 °, thickness about 25mm
Time, stop being wound around, carry out cured, obtain the second winding layer；
(4) processing.
Experimental example
The solid mandrel using dye absorption test to obtain embodiment 2 and comparative example 1 method is examined
Testing, result shows, defect does not occurs in interiors of products.
The solid mandrel that Example 2 and comparative example 1 method obtain, conventionally distinguishes
Installing the umbrella cover of 3 full skirts, metal flange is installed at two ends, respectively obtains embodiment 2 insulator
With comparative example 1 insulator.Use " 9.3.1 bending failure load examination in GB/T25096-2010
Test " method, testing example 2 insulator and the bend loading of comparative example 1 insulator, survey
The maximum deflection load obtaining comparative example 1 is 19.2KN, and the maximum deflection load of embodiment 2 is
25.6KN。
In the case of without departing substantially from the flesh and blood of the present invention, it may occur to persons skilled in the art that
Any deformation, improve, replace and each fall within the scope of the present invention.
Claims (8)
1. a solid mandrel, including inner core and at least one winding layer, it is characterised in that institute
At least one winding layer stated is wrapped in the outside of described inner core；Described winding layer includes that first twines
Winding and the second winding group, the winding angle of the first winding group is 3 °～10 °, the second winding group
Winding angle be 80 °～89 °, and the thickness proportion of the first winding group and the second winding group is
7～9:1～3；The first described winding group and the second described winding group are alternately arranged；
Wherein, at least one winding layer described is two or more winding layer；
Wherein, resin is scribbled between described inner core and described winding layer, between adjacent winding layer
Scribbling resin, described resin is epoxy resin.
Solid mandrel the most according to claim 1, it is characterised in that described first is wound around
The thickness of group is 4～16mm, and the thickness of described second winding group is 1～4mm.
Solid mandrel the most according to claim 1, it is characterised in that each winding layer bag
Containing 5～12 the first winding groups and 5～12 the second winding groups.
Solid mandrel the most according to claim 1, it is characterised in that described solid mandrel
Including inner core and two winding layers, a diameter of the 90 of described inner core～110mm；Each winding
The thickness of layer is 35～60mm.
Solid mandrel the most according to claim 4, it is characterised in that described inner core straight
Footpath is 100～110mm；The thickness of each winding layer is 40～55mm.
Solid mandrel the most according to claim 1, it is characterised in that outside described inner core
Surface has screw thread, and the degree of depth of described screw thread is 0.2mm～0.7mm, the pitch of described screw thread
For 1mm～6mm.
7. according to the manufacture method of the solid mandrel described in any one of claim 1～6, including
Following steps:
(1) cleaning: be cleaned processing to the outer surface of described inner core；
(2) winding layer is formed: by the outer surface of resin coating inner core after the cleaning, then
Alternately it is wound around the first winding group and the second winding group, then carries out cured, form winding layer.
8. an insulator, it is characterised in that described insulator includes claim 1～6
One described solid mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510883861.3A CN105355341B (en) | 2015-12-04 | 2015-12-04 | Solid core rod, insulator and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510883861.3A CN105355341B (en) | 2015-12-04 | 2015-12-04 | Solid core rod, insulator and manufacturing method |
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| Publication Number | Publication Date |
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| CN105355341A CN105355341A (en) | 2016-02-24 |
| CN105355341B true CN105355341B (en) | 2017-01-11 |
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| CN201510883861.3A Active CN105355341B (en) | 2015-12-04 | 2015-12-04 | Solid core rod, insulator and manufacturing method |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158170B (en) * | 2016-06-20 | 2017-09-22 | 北京玻钢院复合材料有限公司 | The preparation method of core rod of insulator |
| CN106448958B (en) * | 2016-10-25 | 2017-11-17 | 北京玻钢院复合材料有限公司 | Precast body, core rod of insulator and the preparation method of non-resin winding |
| CN106298111B (en) * | 2016-10-25 | 2017-11-17 | 北京玻钢院复合材料有限公司 | Core rod of insulator precast body, core rod of insulator and preparation method |
| CN106531376B (en) * | 2016-10-25 | 2017-11-17 | 北京玻钢院复合材料有限公司 | Precast body, core rod of insulator and preparation method |
| CN106531378B (en) * | 2016-12-12 | 2018-05-25 | 北京玻钢院复合材料有限公司 | The manufacturing method of solid cylinder |
| CN106910575B (en) * | 2017-03-31 | 2018-07-03 | 西安康本材料有限公司 | A kind of high-performance post composite insulator plug and its manufacturing method |
| CN110676001A (en) * | 2019-09-20 | 2020-01-10 | 江西华洋电瓷制造有限公司 | Composite material super-multi-shed insulator composition and manufacturing method thereof |
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|---|---|---|---|---|
| GB2015053B (en) * | 1978-02-24 | 1982-05-06 | Pirelli | Submarine cable |
| WO1999052116A1 (en) * | 1998-04-06 | 1999-10-14 | Sumitomo Electric Industries, Ltd. | Coaxial cable, multicore cable, and electronics using them |
| CN201036070Y (en) * | 2007-04-30 | 2008-03-12 | 无锡华能电缆有限公司 | Composite material overhead conductor |
| CN205177515U (en) * | 2015-12-04 | 2016-04-20 | 北京玻钢院复合材料有限公司 | Solid plug and contain its insulator |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2015053B (en) * | 1978-02-24 | 1982-05-06 | Pirelli | Submarine cable |
| WO1999052116A1 (en) * | 1998-04-06 | 1999-10-14 | Sumitomo Electric Industries, Ltd. | Coaxial cable, multicore cable, and electronics using them |
| CN201036070Y (en) * | 2007-04-30 | 2008-03-12 | 无锡华能电缆有限公司 | Composite material overhead conductor |
| CN205177515U (en) * | 2015-12-04 | 2016-04-20 | 北京玻钢院复合材料有限公司 | Solid plug and contain its insulator |
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| CN105355341A (en) | 2016-02-24 |
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Effective date of registration: 20181212 Address after: 277500 South of Beixin West Road, Tengzhou City, Zaozhuang City, Shandong Province (Luban Avenue West, College West Road North) Patentee after: Beibao Power Composite Co., Ltd. Address before: 102101 No. 261 Kangxi Road, Badaling Economic Development Zone, Yanqing County, Beijing Patentee before: Beijing FRP Research & Design Institute Composite Co., Ltd. |